rm internal transport

Author: JanProvaznik

NuGet.config

@@ -50,7 +50,6 @@
     <add key="dotnet9" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet9/nuget/v3/index.json" />
     <add key="dotnet9-transport" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet9-transport/nuget/v3/index.json" />
     <add key="dotnet-public" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-public/nuget/v3/index.json" />
-    <add key="dotnet9-internal-transport" value="https://pkgs.dev.azure.com/dnceng/internal/_packaging/dotnet9-internal-transport/nuget/v3/index.json" />
     <add key="dotnet-eng" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json" />
     <add key="dotnet-tools" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools/nuget/v3/index.json" />
     <add key="dotnet-tools-transport" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools-transport/nuget/v3/index.json" />
@@ -66,7 +65,6 @@
     <!--Begin: Package sources managed by Dependency Flow automation. Do not edit the sources below.-->
     <!--  Begin: Package sources from DotNet-msbuild-Trusted -->
     <add key="darc-int-DotNet-msbuild-Trusted-09c1be8" value="true" />
-    <add key="dotnet9-internal-transport" value="true" />
     <!--  End: Package sources from DotNet-msbuild-Trusted -->
     <!--  Begin: Package sources from dotnet-templating -->
     <!--  End: Package sources from dotnet-templating -->